An electrode assembly

Abstract

The application discloses an electric core stacking device, which comprises a base, a reference positioning mechanism, a plurality of electric core grouping mechanisms and a pressing mechanism. The base is provided with a mounting surface, the mounting surface has a first direction and a second direction intersecting with each other, and the reference positioning mechanism is fixedly connected to the mounting surface. Along the first direction, the plurality of electric core grouping mechanisms are arranged in sequence on one side of the reference positioning mechanism, and the electric core grouping mechanisms are movably connected to the base. The electric core grouping mechanisms are used for stacking a plurality of electric cores along the second direction to form an electric core group and moving the electric core group towards the reference positioning mechanism. The pressing mechanism is movably connected to the base and is used for pressing the electric core groups in the electric core grouping mechanisms in sequence, so that a plurality of electric core groups are stacked to form a battery pack. Further, the pressing mechanism can press each row of electric core groups respectively, and the connection firmness between two adjacent rows of electric core groups is ensured.

Description

Technical Field

[0001] This application belongs to the field of battery technology, specifically relating to a cell stacking device. Background Technology

[0002] With the development of the national new energy industry, the energy density of battery packs is gradually increasing. Cell-to-pack (CTP) technology, which directly integrates multiple cells into a battery pack, is the future development direction of the electric vehicle industry. CTP technology simplifies the manufacturing process from battery to module to complete pack to battery to complete pack, eliminating the intermediate module process, which can significantly reduce the weight of the entire pack and thus improve energy density.

[0003] In related technologies, multiple battery cells are stacked in rows using stacking fixtures, and then the stacked battery cells are solidified into a whole and packaged. An intermediate plate is set between two adjacent rows of battery cells, and the intermediate plate is bonded and fixed to the battery cells with adhesive.

[0004] However, the stacking tooling using related technologies has the problem of uneven bonding between multiple rows of cells when stacking multiple cells to form a battery pack, making it difficult to guarantee the overall structural strength of the battery. Summary of the Invention

[0005] This application aims to provide a cell stacking device that can solve the problem of uneven bonding between multiple rows of cells when stacking battery packs using stacking tooling with related technologies, making it difficult to ensure the overall structural strength of the battery.

[0006] To solve the above-mentioned technical problems, this application is implemented as follows:

[0007] In a first aspect, embodiments of this application propose a battery cell stacking device, including: a base, a reference positioning mechanism, a battery cell grouping mechanism, and a clamping mechanism;

[0008] The base is provided with a mounting surface, the mounting surface having an intersecting first direction and a second direction, and the reference positioning mechanism is fixedly connected to the mounting surface;

[0009] Along the first direction, a plurality of the battery cell grouping mechanisms are arranged sequentially on one side of the reference positioning mechanism, and the battery cell grouping mechanism is movably connected to the base. The battery cell grouping mechanism is used to stack multiple battery cells along the second direction to form a battery cell group, and to drive the battery cell group to move toward the reference positioning mechanism.

[0010] The clamping mechanism is movably connected to the base and is used to sequentially clamp the cell groups in the cell assembly mechanism so that several cell groups are stacked to form a battery pack.

[0011] Optionally, the cell assembly mechanism includes: a substrate, a positioning plate, and an assembly assembly;

[0012] The substrate is movably connected to the base along the first direction, the positioning plate is fixedly connected to one end of the substrate, and the grouping assembly is movably connected to the other end of the substrate; the grouping assembly can move along the second direction to approach or move away from the positioning plate, and multiple cells are stacked to form a cell group by cooperating with the positioning plate through the grouping assembly.

[0013] Optionally, the assembly includes: a pressing member and a first driving member;

[0014] The pressing member is slidably connected to the substrate along the second direction. The first driving member is disposed on the substrate. The pressing member is connected to the first driving member. The first driving member is used to drive the pressing member to move closer to or away from the positioning plate along the second direction.

[0015] Optionally, the pressing element includes: a drive plate, a pressing plate, and a first pressure-sensitive element;

[0016] The drive plate is movably connected to the base plate along the second direction, and the pressing plate is elastically connected to the side of the drive plate facing the positioning plate; the first pressure-sensing element is disposed between the pressing plate and the drive plate, and is used to detect the relative pressure between the pressing plate and the drive plate;

[0017] The first driving member is connected to the driving plate and is used to drive the driving plate to move, and through the driving plate, drive the pressing plate to move along the second direction.

[0018] Optionally, the cell assembly mechanism further includes: a first guide rail, a first slider, and a second slider;

[0019] The first guide rail is disposed on the substrate along the second direction. The first slider and the second slider are both slidably connected to the first guide rail, and the second slider is located on the side of the first slider facing the positioning plate. The driving plate is connected to the first slider, and the pressing plate is connected to the second slider.

[0020] Optionally, the assembly further includes: a first limiting block and a second limiting block, the first limiting block and the second limiting block being spaced apart on the substrate along the second direction, the driving plate being disposed between the first limiting block and the second limiting block, the first limiting block and the second limiting block being used to limit the movement position of the driving plate.

[0021] Optionally, the first driving component includes: a first lead screw, a first lead screw slider, a handwheel, and a locking component;

[0022] The first lead screw is rotatably connected to the substrate, the first lead screw slider is slidably connected to the first lead screw along the second direction, and the pressing member is fixedly connected to the first lead screw slider; the handwheel is connected to the first lead screw and is used to drive the first lead screw to rotate relative to the substrate; the locking member is disposed between the substrate and the first lead screw and is used to lock the first lead screw.

[0023] Optionally, the clamping mechanism includes: a clamping assembly, a transmission component, and a second driving component;

[0024] The transmission component is movably connected to the base, and the pressing assembly is connected to the transmission component; the second driving component is connected to the transmission component and is used to drive the transmission component to move, and through the transmission component, drive the pressing assembly to squeeze the battery cell assembly.

[0025] Optionally, the clamping assembly includes: a clamping plate, a lifting mechanism, and a connecting structure;

[0026] A movable space is formed between the cell assembly mechanism and the mounting surface. The transmission component is located within the movable space, the connecting structure is connected to the transmission component, and the pressure plate is slidably connected to the connecting structure. The lifting mechanism is located on the connecting structure and connected to the pressure plate, and is used to drive the pressure plate to move up and down relative to the connecting structure.

[0027] Optionally, the connection structure includes: a pressing plate, a connecting plate, and a second pressure-sensing element;

[0028] The extrusion plate is connected to the transmission member, the connecting plate is elastically connected to the extrusion plate, and the pressing plate is slidably connected to the connecting plate along a third direction, which is perpendicular to the first direction and the second direction; the second pressure sensing element is disposed between the extrusion plate and the connecting plate and is used to detect the pressure between the extrusion plate and the connecting plate.

[0029] Optionally, the connection structure further includes at least two guide shafts and an elastic element;

[0030] The extrusion plate is provided with at least two guide holes. One end of the guide shaft is connected to the connecting plate, and the other end of the guide shaft passes through the guide hole. The elastic element is provided between the connecting plate and the extrusion plate and is sleeved on the outside of the guide shaft.

[0031] Optionally, the transmission component includes a second lead screw and a second lead screw slider;

[0032] The second lead screw is rotatably connected to the base, the second lead screw slider is slidably connected to the second lead screw, the extrusion plate is fixedly connected to the second lead screw slider, and the connecting plate is slidably connected to the second lead screw slider; the second driving member is connected to the second lead screw and is used to drive the second lead screw to rotate, and drive the second lead screw slider to move along the first direction through the second lead screw.

[0033] Optionally, the cell stacking device further includes a side plate fixing mechanism;

[0034] Along the first direction, the side plate fixing mechanism is located on the side of the plurality of battery cell assembly mechanisms opposite to the reference positioning mechanism, and is movably connected to the base; the side plate fixing mechanism is used to support the battery cell side plate to fit with the battery cell assembly, and to press the battery cell side plate and the battery cell assembly together by the pressing mechanism.

[0035] Optionally, the reference positioning mechanism or the side plate fixing mechanism includes: a support base, a fixing plate, and a vacuum adsorption component;

[0036] The support seat in the reference positioning mechanism is fixedly connected to the base, and the support seat in the side plate fixing mechanism is movably connected to the base; the fixing plate is connected to the support seat, and the vacuum adsorption component is disposed on the fixing plate, and the vacuum adsorption component is used to adsorb and fix the battery cell side plate.

[0037] Optionally, the vacuum suction device includes at least two vacuum suction cups and a vacuum generator;

[0038] At least two of the vacuum suction cups are spaced apart on the fixing plate along the second direction. The vacuum generator is connected to the vacuum suction cups and is used to provide vacuum suction to the vacuum suction cups so as to adsorb and fix the battery cell side plate by the vacuum suction cups.

[0039] Optionally, the fixing plate is provided with at least two positioning pins, which are spaced apart along the second direction on the fixing plate for positioning the battery cell side plate.

[0040] Optionally, the cell stacking device further includes: a plurality of positioning and locking mechanisms; the plurality of positioning and locking mechanisms are sequentially mounted on the base along the first direction;

[0041] The positioning and locking mechanism includes: a fixed slide, a locking block, a snap-fit ​​component, and an adjusting component;

[0042] The fixed slide is mounted on the base, the locking block is slidably connected to the fixed slide, and the locking block is provided with a slot; the snap-fit ​​component is provided in the battery cell assembly mechanism and / or the side plate fixing mechanism;

[0043] The adjusting member is movably connected to the fixed slide and connected to the locking block, and is used to push the locking block to move relative to the fixed slide so that the locking block moves closer to or away from the latching member. When the locking block moves closer to the latching member, the slot engages with the latching member.

[0044] Secondly, embodiments of this application provide a battery pack assembly apparatus, including the cell stacking device described in any of the above claims.

[0045] In the embodiments of this application, multiple cells can be stacked along a second direction to form a cell group by a cell grouping mechanism on the base. Then, using a reference positioning mechanism as a reference, multiple rows of cell groups are stacked sequentially along a first direction. During the stacking process, a clamping mechanism is used to clamp the cell groups in each cell grouping mechanism. In this way, multiple cell grouping mechanisms and clamping mechanisms can cooperate to stack multiple cells to form a battery pack. By clamping each row of cell groups during the stacking process, the connection between adjacent rows of cell groups is ensured to be firm, thereby improving the overall structural strength of the battery pack.

[0046] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0047] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0048] Figure 1 This is one of the schematic diagrams of a cell stacking device according to an embodiment of this application;

[0049] Figure 2 This is a second schematic diagram of a cell stacking device according to an embodiment of this application;

[0050] Figure 3 This is a third schematic diagram of a cell stacking device according to an embodiment of this application;

[0051] Figure 4 This is a fourth schematic diagram of a cell stacking device according to an embodiment of this application;

[0052] Figure 5 This is one of the schematic diagrams of a cell assembly mechanism according to an embodiment of this application;

[0053] Figure 6 This is a second schematic diagram of a cell assembly mechanism according to an embodiment of this application;

[0054] Figure 7 This is a third schematic diagram of a cell assembly mechanism according to an embodiment of this application;

[0055] Figure 8 This is one of the partial structural schematic diagrams of the cell assembly mechanism according to an embodiment of this application;

[0056] Figure 9 This is a second partial structural schematic diagram of the cell assembly mechanism according to an embodiment of this application;

[0057] Figure 10 This is a schematic diagram of the clamping mechanism according to an embodiment of this application;

[0058] Figure 11 This is one of the schematic diagrams of a clamping assembly according to an embodiment of this application;

[0059] Figure 12 This is a second schematic diagram of the clamping assembly according to an embodiment of this application;

[0060] Figure 13 This is a third schematic diagram of the clamping assembly according to an embodiment of this application;

[0061] Figure 14 This is a schematic diagram of a side plate fixing mechanism according to an embodiment of this application;

[0062] Figure 15 This is a schematic diagram of a reference positioning mechanism according to an embodiment of this application;

[0063] Figure 16 This is a schematic diagram of a positioning and locking mechanism according to an embodiment of this application.

[0064] Figure label:

[0065] 100: Base; 101: Mounting surface; 200: Reference positioning mechanism; 300: Cell assembly mechanism; 310: Base plate; 320: Positioning plate; 330: Assembly component; 331: Pressing component; 3311: Drive plate; 3312: Pressing plate; 3313: First pressure sensing component; 332: First driving component; 3321: First lead screw; 3322: First lead screw slider; 3323: Handwheel; 3324: Locking component; 340: First guide rail; 350: First slider; 360: Second slider; 370: First limit block; 380: Second limit block; 400: Pressing mechanism; 410: Pressing assembly; 411: Pressing plate; 412: Lifting mechanism; 413: Connecting structure ; 4131: Extrusion plate; 4132: Connecting plate; 4133: Second pressure sensing element; 4134: Guide shaft; 4135: Elastic element; 420: Transmission element; 421: Second lead screw; 422: Second lead screw slider; 430: Second driving element; 500: Side plate fixing mechanism; 510: Support base; 520: Fixing plate; 530: Vacuum adsorption element; 531: Vacuum suction cup; 532: Vacuum generator; 540: Positioning pin; 600: Positioning locking mechanism; 610: Fixed slide; 620: Locking block; 621: Slot; 630: Snap-fit ​​element; 640: Adjusting element; 710: Battery cell; 720: Battery cell assembly; X: First direction; Y: Second direction; Z: Third direction. Detailed Implementation

[0066] The embodiments of this application will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0067] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0068] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0069] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0070] The cell stacking device and battery pack assembly equipment provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0071] like Figures 1 to 4 As shown, a cell stacking device according to some embodiments of this application includes a base 100, a reference positioning mechanism 200, a plurality of cell grouping mechanisms 300, and a pressing mechanism 400. The base 100 is provided with a mounting surface 101, which has an intersecting first direction X and a second direction Y. The reference positioning mechanism 200 is fixedly connected to the mounting surface 101. Along the first direction X, a plurality of cell grouping mechanisms 300 are sequentially arranged on one side of the reference positioning mechanism 200, and the cell grouping mechanisms 300 are movably connected to the base 100. The cell grouping mechanisms 300 are used to stack a plurality of cells 710 along the second direction Y to form a cell group 720, and drive the cell group 720 to move toward the reference positioning mechanism 200. The pressing mechanism 400 is movably connected to the base 100 and is used to sequentially press the cell groups 720 in the cell grouping mechanisms 300 so that the plurality of cell groups 720 are stacked to form a battery pack.

[0072] In the embodiments of this application, multiple cells 710 can be stacked along the second direction Y to form a cell group 720 by the cell grouping mechanism 300 on the base 100. Then, with the reference positioning mechanism 200 as the reference, multiple rows of cell groups 720 are stacked sequentially along the first direction X. During the stacking process, the pressing mechanism 400 presses the cell group 720 in each cell grouping mechanism 300. In this way, multiple cells 710 can be stacked to form a battery pack by the cooperation of multiple cell grouping mechanisms 300 and pressing mechanism 400. By pressing each row of cell groups 720 separately during the stacking process, the connection between adjacent rows of cell groups 720 is ensured to be firm, thereby improving the overall structural strength of the battery pack.

[0073] Specifically, a plurality of cell assembly mechanisms 300 are provided on the mounting surface 101 of the base 100. Each cell assembly mechanism 300 can be used to stack multiple cells 710 along the second direction Y to form a cell group 720, and each cell assembly mechanism 300 is movably connected to the base 100. After multiple cells 710 are stacked to form a single row of cell groups 720 using the cell assembly mechanism 300, the cell assembly mechanism 300 can be moved so that the corresponding cell group 720 moves toward the reference positioning mechanism 200, thereby realizing the sequential stacking of multiple rows of cell groups 720 along the first direction X.

[0074] Furthermore, by providing a clamping mechanism 400 on the base 100, the clamping mechanism 400 can move relative to the base 100. When stacking multiple rows of battery cell groups 720 with the reference positioning mechanism 200 as a reference, the clamping mechanism 400 can be used to clamp each row of battery cell groups 720 respectively.

[0075] Understandably, when two adjacent rows of cell groups 720 are stacked together, a connector is usually placed between the two cell groups 720. Adhesive is applied to both ends of the connector to bond and fix the two rows of cell groups 720 together.

[0076] The stacking fixtures in related technologies directly stack multiple cell 710 arrays to form a battery pack, and then compress the entire battery pack. Using this stacking fixture results in uneven local stress within the battery pack, which prevents the adhesive from being fully compressed, leading to uneven bonding between multiple rows of cell 710 and affecting the performance of the battery pack.

[0077] The battery cell stacking device of this application embodiment uses a pressing mechanism 400 on the base 100 to press each row of battery cell groups 720 separately during the stacking process. This ensures that each row of battery cell groups 720 is subjected to balanced force, thereby allowing the adhesive between each row of battery cell groups 720 and the connector to be fully distributed under force, ensuring the bonding effect between the battery cell groups 720 and the connector, and thus improving the connection firmness between adjacent rows of battery cell groups 720.

[0078] Optionally, such as Figures 5 to 7 As shown, the battery cell assembly mechanism 300 includes a substrate 310, a positioning plate 320, and an assembly component 330. The substrate 310 is movably connected to the base 100 along the first direction X, the positioning plate 320 is fixedly connected to one end of the substrate 310, and the assembly component 330 is movably connected to the other end of the substrate 310. The assembly component 330 can move along the second direction Y to approach or move away from the positioning plate 320, and multiple battery cells 710 are stacked to form a battery cell assembly 720 through the cooperation of the assembly component 330 and the positioning plate 320.

[0079] In the embodiments of this application, a positioning plate 320 and a movable grouping assembly 330 are provided on the substrate 310 to place multiple battery cells 710 in rows between the positioning plate 320 and the grouping assembly 330 to form a battery cell group 720. The battery cell group 720 is pressed together by the movement of the grouping assembly 330 along the second direction Y to ensure the dimensional accuracy of the battery cell group 720. At the same time, the substrate 310 can move on the base 100 along the first direction X to drive the battery cell group 720 toward the reference positioning mechanism 200 to realize the stacking of different battery cell groups 720.

[0080] Optionally, such as Figure 8 As shown, the assembly 330 includes a pressing member 331 and a first driving member 332; the pressing member 331 is slidably connected to the substrate 310 along the second direction Y, and the first driving member 332 is disposed on the substrate 310. The pressing member 331 is connected to the first driving member 332, and the first driving member 332 is used to drive the pressing member 331 to move closer to or away from the positioning plate 320 along the second direction Y.

[0081] In the embodiments of this application, the pressing member 331 is driven by the first driving member 332 to move relative to the positioning plate 320, so as to compress multiple battery cells 710 on the substrate 310 to form a battery cell assembly 720. At the same time, when multiple rows of battery cell assemblies 720 are stacked along the first direction X, the pressing member 331 maintains the pressing action on the corresponding battery cell assembly 720 to avoid local springback of the battery cell assembly 720 and thus avoid large dimensional errors.

[0082] The first driving component 332 can be a manual driving component, a motor driving component, a cylinder driving component, a hydraulic driving component, or other types of driving mechanisms. This application embodiment does not impose any restrictions on these types of driving mechanisms.

[0083] Optionally, such as Figure 8 As shown, the pressing member 331 includes a drive plate 3311, a pressing plate 3312, and a first pressure-sensing member 3313; the drive plate 3311 is movably connected to the base plate 310 along the second direction Y, and the pressing plate 3312 is elastically connected to the side of the drive plate 3311 facing the positioning plate 320; the first pressure-sensing member 3313 is disposed between the pressing plate 3312 and the drive plate 3311, and is used to detect the relative pressure between the pressing plate 3312 and the drive plate 3311; the first drive member 332 is connected to the drive plate 3311, and is used to drive the drive plate 3311 to move, and drive the pressing plate 3312 to move along the second direction Y through the drive plate 3311.

[0084] In the embodiments of this application, by connecting the drive plate 3311 to the first drive member 332, the pressing plate 3312 is elastically connected to the drive plate 3311, so that the first drive member 332 can drive the drive plate 3311 to move, and the drive plate 3311 can drive the pressing plate 3312 to move, so as to squeeze the multiple battery cells 710 placed between the pressing plate 3312 and the positioning plate 320.

[0085] Meanwhile, a first pressure-sensing element 3313 is provided between the pressing plate 3312 and the drive plate 3311 to detect the relative pressure between the pressing plate 3312 and the drive plate 3311, so as to control the magnitude of the squeezing force of the pressing plate 3312 on the multiple battery cells 710, thereby avoiding excessive squeezing force on the battery cells 710 and causing damage to the battery cells 710 when the multiple battery cells 710 are pressed together to form the battery cell group 720.

[0086] The pressing plate 3312 and the driving plate 3311 are elastically connected so that they can move relative to each other. For example, an elastic telescopic rod can be provided between the pressing plate 3312 and the driving plate 3311, with one end connected to the driving plate 3311 and the other end connected to the pressing plate 3312.

[0087] In specific applications, when the first driving member 332 drives the driving plate 3311 to move, it can drive the pressing plate 3312 to move. When the pressing plate 3312 comes into contact with the battery cell 710, the pressing plate 3312 and the driving plate 3311 will move relative to each other under the reverse force of the battery cell 710. At this time, the first pressure sensing member 3313 can detect the relative pressure between the pressing plate 3312 and the driving plate 3311 so as to accurately control the pressing force of the pressing plate 3312.

[0088] It should be noted that the first pressure sensing element 3313 can be a pressure sensor, pressure gauge, pressure measuring instrument or other pressure sensing element. Of course, other types of pressure sensing elements can also be selected. This application embodiment does not limit this.

[0089] Optionally, such as Figure 8 As shown, the cell assembly mechanism 300 also includes a first guide rail 340, a first slider 350, and a second slider 360. The first guide rail 340 is disposed on the substrate 310 along the second direction Y. The first slider 350 and the second slider 360 are both slidably connected to the first guide rail 340, and the second slider 360 is located on the side of the first slider 350 facing the positioning plate 320. The drive plate 3311 is connected to the first slider 350, and the pressing plate 3312 is connected to the second slider 360.

[0090] In the embodiments of this application, by providing a first guide rail 340, a first slider 350, and a second slider 360 on the substrate 310, a drive plate 3311 is connected to the first slider 350, and a pressing plate 3312 is connected to the second slider 360, so that when the drive plate 3311 and the pressing plate 3312 are driven by the first drive member 332 to squeeze the battery cell 710, they play a guiding and limiting role, thereby improving the smoothness of movement of the drive plate 3311 and the pressing plate 3312.

[0091] Optionally, such as Figure 8 As shown, the assembly 330 also includes a first limiting block 370 and a second limiting block 380. The first limiting block 370 and the second limiting block 380 are mounted on the substrate 310 at intervals along the second direction Y. The drive plate 3311 is disposed between the first limiting block 370 and the second limiting block 380. The first limiting block 370 and the second limiting block 380 are used to limit the movement position of the pressing drive plate 3311.

[0092] In the embodiments of this application, by setting a first limiting block 370 and a second limiting block 380 on the substrate 310, the drive plate 3311 is disposed between the first limiting block 370 and the second limiting block 380, so as to limit the drive plate 3311 by using the first limiting block 370 and the second limiting block 380, thereby achieving precise control of the movement stroke of the pressing member 331.

[0093] Optionally, such as Figure 9 As shown, the first driving member 332 includes a first lead screw 3321, a first lead screw slider 3322, and a handwheel 3323; the first lead screw 3321 is rotatably connected to the substrate 310, the first lead screw slider 3322 is slidably connected to the first lead screw 3321 along the second direction Y, and the pressing member 331 is fixedly connected to the first lead screw slider 3322; the handwheel 3323 is connected to the first lead screw 3321 and is used to drive the first lead screw 3321 to rotate relative to the substrate 310.

[0094] In the embodiments of this application, the combination of handwheel 3323 and lead screw slider structure can realize manual drive control, so as to better control the installation size accuracy of cell group 720 during the stacking of multiple cells 710.

[0095] Optionally, such as Figure 9 As shown, the first driving member 332 also includes a locking member 3324, which is disposed between the base plate 310 and the first lead screw 3321 and is used to lock the first lead screw 3321.

[0096] In the embodiments of this application, by providing a locking member 3324 between the substrate 310 and the first lead screw 3321, the position of the first lead screw 3321 is locked by the locking member 3324 after multiple cells 710 are extruded to form a cell assembly 720, thereby ensuring the dimensional stability of the cell assembly 720 and preventing changes in the size of the cell assembly 720 during subsequent stacking operations, which helps to improve the overall dimensional accuracy of the battery pack.

[0097] Optionally, such as Figure 10 As shown, the pressing mechanism 400 includes a pressing assembly 410, a transmission member 420, and a second driving member 430; the transmission member 420 is movably connected to the base 100, and the pressing assembly 410 is connected to the transmission member 420; the second driving member 430 is connected to the transmission member 420 and is used to drive the transmission member 420 to move, and through the transmission member 420, drive the pressing assembly 410 to press the battery cell assembly 720.

[0098] In the embodiments of this application, by providing a movable transmission member 420 on the base 100, the pressing assembly 410 is connected to the transmission member 420. The driving force of the second driving member 430 can be transmitted to the pressing assembly 410 through the transmission member 420, so as to drive the pressing assembly 410 to move relative to the base 100. Then, the pressing assembly 410 is used to squeeze the battery cell group 720 on each battery cell grouping mechanism 300, thereby ensuring that the forces between two adjacent rows of battery cell groups 720 can be fully balanced, so as to improve the connection firmness of the two rows of battery cell groups 720.

[0099] It should be noted that the second driving component 430 can be a manual driving component, a motor driving component, a cylinder driving component, a hydraulic driving component, or other types of driving mechanisms. This application embodiment does not impose any restrictions on these types of driving mechanisms.

[0100] In addition, the transmission component 420 can be selected from a lead screw transmission structure, rack and pinion transmission mechanism, worm gear transmission mechanism, or other types of transmission mechanism. This application embodiment does not impose any restrictions on these.

[0101] Optionally, such as Figure 11As shown, the clamping assembly 410 includes a clamping plate 411, a lifting mechanism 412, and a connecting structure 413; a movable space is formed between the battery cell assembly mechanism 300 and the mounting surface 101, a transmission member 420 is disposed in the movable space, the connecting structure 413 is connected to the transmission member 420, and the clamping plate 411 is slidably connected to the connecting structure 413; the lifting mechanism 412 is disposed in the connecting structure 413 and connected to the clamping plate 411, and is used to drive the clamping plate 411 to move up and down relative to the connecting structure 413.

[0102] In the embodiments of this application, the connecting structure 413 can be moved by the transmission member 420 to adjust the position of the pressing assembly 410 relative to the cell assembly mechanism 300. Then, the lifting mechanism 412 drives the pressing plate 411 to move up and down, so that the pressing plate 411 is close to the side of the cell assembly mechanism 300 away from the reference positioning mechanism 200, so as to press the cell group 720 in the cell assembly mechanism 300 with the pressing plate 411.

[0103] In specific applications, a certain gap can be provided between the substrate 310 and the base 100 in each cell assembly mechanism 300, thereby forming an active space between the cell assembly mechanism 300 and the mounting surface 101. The transmission component 420 and the clamping component 410 are arranged in the active space so that the clamping component 410 can move between multiple cell assembly mechanisms 300.

[0104] When it is necessary to press the battery cell assembly 720 in one of the battery cell assembly mechanisms 300, the pressing assembly 410 can be moved as a whole by the transmission component 420. After moving to the target position, the pressing plate 411 is driven to move up and down by the lifting mechanism 412 so that the pressing plate 411 is raised and lowered to the same height as the battery cell assembly 720. Then, the pressing assembly 410 can be moved further by the transmission component 420 to achieve the squeezing effect on the battery cell assembly 720.

[0105] Optionally, such as Figure 12 and Figure 13 As shown, the connecting structure 413 includes a pressing plate 4131, a connecting plate 4132, and a second pressure-sensing element 4133. The pressing plate 4131 is connected to the transmission element 420, the connecting plate 4132 is elastically connected to the pressing plate 4131, and the pressing plate 411 is slidably connected to the connecting plate 4132 along a third direction Z, which is perpendicular to the first direction X and the second direction Y. The second pressure-sensing element 4133 is disposed between the pressing plate 4131 and the connecting plate 4132 and is used to detect the pressure between the pressing plate 4131 and the connecting plate 4132.

[0106] In the embodiments of this application, the driving force of the second driving member 430 can be transmitted to the pressing plate 411 through the extrusion plate 4131 and the connecting plate 4132 to achieve the extrusion effect on the battery cell assembly 720. At the same time, a second pressure sensing member 4133 is provided between the extrusion plate 4131 and the connecting plate 4132 so that the relative pressure between the extrusion plate 4131 and the connecting plate 4132 can be detected during the extrusion of the battery cell assembly 720. This allows for precise control of the extrusion force of the pressing assembly 410, avoiding damage to the battery cell assembly 720 due to excessive extrusion force.

[0107] In some embodiments, the lifting mechanism 412 may include a third driving member and a transmission plate; the transmission plate is connected to one of the pressing plate 411 and the connecting plate 4132, and the third driving member is connected to the other of the pressing plate 411 and the connecting plate 4132. The third driving member is connected to the transmission plate, and the transmission plate can be driven to move through the third driving member, thereby realizing the lifting and lowering movement of the pressing plate 411 relative to the connecting plate 4132.

[0108] The lifting mechanism 412 can be selected from pneumatic drive mechanism, electric drive mechanism, hydraulic drive structure, etc. Those skilled in the art can make flexible settings according to actual needs, and the embodiments of this application do not limit it.

[0109] Optionally, such as Figure 13 As shown, the connecting structure 413 also includes at least two guide shafts 4134 and an elastic element 4135; the extrusion plate 4131 is provided with at least two guide holes, one end of the guide shaft 4134 is connected to the connecting plate 4132, and the other end of the guide shaft 4134 passes through the guide hole; the elastic element 4135 is provided between the connecting plate 4132 and the extrusion plate 4131 and is sleeved on the outside of the guide shaft 4134; one end of the elastic element 4135 abuts against the extrusion plate 4131, and the other end abuts against the connecting plate 4132.

[0110] In the embodiments of this application, a guide shaft 4134 and an elastic element 4135 are provided between the extrusion plate 4131 and the connecting plate 4132 to achieve an elastic connection between the extrusion plate 4131 and the connecting plate 4132. At the same time, the guide shaft 4134 can play a guiding and limiting role, so that the relative pressure between the extrusion plate 4131 and the connecting plate 4132 can be accurately controlled by the second pressure sensing element 4133.

[0111] Among them, the elastic element 4135 can be selected from elastic structural elements that can produce elastic deformation, such as metal springs and rubber elastic elements. The specific structure of the elastic element 4135 can be flexibly set according to actual needs, and this application does not limit it.

[0112] Optionally, such as Figure 10 and Figure 12As shown, the transmission component 420 includes a second lead screw 421 and a second lead screw slider 422; the second lead screw 421 is rotatably connected to the base 100, the second lead screw slider 422 is slidably connected to the second lead screw 421, the pressing plate 4131 is fixedly connected to the second lead screw slider 422, and the connecting plate 4132 is slidably connected to the second lead screw slider 422; the second driving component 430 is connected to the second lead screw 421 and is used to drive the second lead screw 421 to rotate, and drive the second lead screw slider 422 to move along the first direction X through the second lead screw 421.

[0113] In the embodiments of this application, the transmission component 420 adopts a screw transmission structure to transmit the driving force of the second driving component 430 to the extrusion plate 4131 and the connecting plate 4132, thereby driving the pressing plate 411 to move and realize the extrusion effect on the battery cell assembly 720. The structure is simple and easy to control and operate.

[0114] The extrusion plate 4131 and the connecting plate 4132 are both mounted on the second lead screw slider 422. When the second lead screw slider 422 moves relative to the second lead screw 421 along the first direction X, it can simultaneously drive the extrusion plate 4131 and the connecting plate 4132 to move. Simultaneously, the extrusion plate 4131 is fixedly connected to the second lead screw slider 422, and the connecting plate 4132 is slidably connected to the second lead screw slider 422. During the movement of the extrusion plate 4131 and the connecting plate 4132 driven by the second lead screw slider 422, the connecting plate 4132 and the extrusion plate 4131 can also move relative to each other. Therefore, the pressure between the extrusion plate 4131 and the connecting plate 4132 can be detected by the second pressure sensor 4133, allowing for precise control of the extrusion force of the pressing plate 411.

[0115] Optionally, such as Figure 1 and Figure 2 As shown, the battery cell stacking device also includes a side plate fixing mechanism 500; along the first direction X, the side plate fixing mechanism 500 is disposed on the side of the plurality of battery cell grouping mechanisms 300 away from the reference positioning mechanism 200, and is movably connected to the base 100; the side plate fixing mechanism 500 is used to support the battery cell side plate to fit with the battery cell group 720, and to press the battery cell side plate and the battery cell group 720 together by the pressing mechanism 400.

[0116] In the embodiments of this application, a side plate fixing mechanism 500 is provided on the side of the plurality of cell assembly mechanisms 300 away from the reference positioning mechanism 200. The side plate fixing mechanism 500 carries the cell side plate and fits it against the cell assembly 720, thereby realizing the assembly between the cell side plate and the cell assembly 720. At the same time, the pressing mechanism 400 can also exert a squeezing force on the side plate fixing mechanism 500 to press the cell side plate, thereby improving the connection firmness between the cell side plate and the cell assembly 720.

[0117] It is understandable that after stacking multiple rows of battery cells 720 in sequence, a battery cell side plate is set on the side of the outermost battery cell 720 that is away from the reference positioning mechanism 200. The end face of the battery cell side plate is coated with adhesive. By using the pressing action of the pressing mechanism 400, the battery cell side plate can be fully bonded and fixed to the battery cell 720.

[0118] Optionally, such as Figure 14 and Figure 15 As shown, the reference positioning mechanism 200 or the side plate fixing mechanism 500 includes: a support base 510, a fixing plate 520, and a vacuum adsorption component 530; the support base 510 in the reference positioning mechanism 200 is fixedly connected to the base 100, and the support base 510 in the side plate fixing mechanism 500 is movably connected to the base 100; the fixing plate 520 is connected to the support base 510, and the vacuum adsorption component 530 is disposed on the fixing plate 520, and the vacuum adsorption component 530 is used to adsorb and fix the battery cell side plate.

[0119] Understandably, a typical cell pack includes multiple rows of cell groups 720, cell side plates located on the outermost two sides of the multiple rows of cell groups 720, and connectors located between two adjacent cell groups 720.

[0120] During the battery pack assembly process, a cell side plate can be pre-fixed on the reference positioning mechanism 200, and then the first cell grouping mechanism 300 is used to stack and form the first row of cell groups 720, and drive the first cell group 720 to fit with the cell side plate on the reference positioning mechanism 200, and then use the pressing component 410 to press the first row of cell groups 720.

[0121] Then, a connector is installed on the side of the cell pack 720 away from the cell side plate. The second cell assembly mechanism 300 is then used to stack the second row of cell packs 720 and move the second row of cell packs 720 toward the first row of cell packs 720 to contact the connector. The clamping assembly 410 is then used to clamp the second row of cell packs 720. This process is repeated to stack multiple rows of cell packs 720. After the last row of cell packs 720 is stacked, the side plate fixing mechanism 500 is used to support another cell side plate and press it against the last row of cell packs 720 to achieve the overall assembly of the battery pack.

[0122] In the embodiments of this application, a vacuum adsorption component 530 is provided in the reference positioning mechanism 200 and the side plate fixing mechanism 500 so that the battery cell side plate can be adsorbed and fixed, so that the battery cell side plate can be assembled and fixed with the multi-row battery cell group 720. The structure is simple and easy to control and operate.

[0123] It should be noted that the structures of the reference positioning mechanism 200 and the side plate fixing mechanism 500 can be the same or different. Those skilled in the art can make flexible settings according to actual needs. This application embodiment does not limit them here.

[0124] In some embodiments, a buffer layer may be provided on the side of the fixing plate 520 facing the cell assembly 720. The buffer layer may be made of a flexible insulating material, so that when the cell side plate is fixed, the cell side plate contacts the buffer layer, which plays a buffering and protective role for the cell side plate.

[0125] Optionally, such as Figure 14 and Figure 15 As shown, the vacuum adsorption component 530 includes at least two vacuum suction cups 531 and a vacuum generator 532; at least two vacuum suction cups 531 are spaced apart on the fixing plate 520 along the second direction Y, and the vacuum generator 532 is connected to the vacuum suction cups 531 to provide vacuum suction to the vacuum suction cups 531 so as to adsorb and fix the battery cell side plate through the vacuum suction cups 531.

[0126] In the embodiments of this application, by providing at least two vacuum suction cups 531 at intervals on the fixing plate 520, when the vacuum suction cups 531 are in contact with the battery cell side plate, the vacuum generator 532 provides vacuum suction to the vacuum suction cups 531, and the battery cell side plate can be adsorbed and fixed under negative pressure.

[0127] The vacuum suction cup 531 can be made of flexible material. During the adsorption and fixation process of the battery cell side plate, the vacuum suction cup 531 can produce a certain elastic deformation, which can play a buffering role and avoid rigid contact between the battery cell side plate and the vacuum suction cup 531.

[0128] Optionally, such as Figure 14 and Figure 15 As shown, the fixing plate 520 is provided with at least two positioning pins 540, which are spaced apart along the second direction Y on the fixing plate 520 for positioning the battery cell side plate.

[0129] In the embodiments of this application, at least two positioning pins 540 are provided on the fixing plate 520 so that the positioning pins 540 can be used to position and cooperate with the positioning holes in the cell side plate to achieve precise control of the assembly position of the cell side plate.

[0130] Optionally, such as Figure 1 As shown, the cell stacking device further includes: a plurality of positioning and locking mechanisms 600; the plurality of positioning and locking mechanisms 600 are sequentially installed on the base 100 along the first direction X, and the positioning and locking mechanisms 600 are used to lock at least one of the cell grouping mechanism 300 and the side plate fixing mechanism 500.

[0131] In the embodiments of this application, by setting a plurality of positioning and locking mechanisms 600 on the base 100, the positions of the cell assembly mechanism 300 and the side plate fixing mechanism 500 are locked after the stacking of multiple rows of cell groups 720 and cell side plates is completed, so as to avoid the rebound of size and improve the accuracy of the overall size of the battery pack.

[0132] The specific location of each positioning and locking mechanism 600 on the base 100 can be preset according to the structure of the battery pack, and this embodiment does not limit this.

[0133] Optionally, such as Figure 16 As shown, the positioning and locking mechanism 600 includes: a fixed slide 610, a locking block 620, a snap-fit ​​member 630, and an adjusting member 640; the fixed slide 610 is mounted on the base 100, the locking block 620 is slidably connected to the fixed slide 610, and the locking block 620 is provided with a snap-fit ​​groove 621; the snap-fit ​​member 630 is provided in the cell assembly mechanism 300 and / or the side plate fixing mechanism 500; the adjusting member 640 is movably connected to the fixed slide 610 and connected to the locking block 620, for pushing the locking block 620 to move relative to the fixed slide 610, so that the locking block 620 moves closer to or away from the snap-fit ​​member 630, and when the locking block 620 moves closer to the snap-fit ​​member 630, the snap-fit ​​groove 621 snaps into the snap-fit ​​member 630.

[0134] In the embodiments of this application, by providing a snap-fit ​​member 630 in the cell assembly mechanism 300 and / or the side plate fixing mechanism 500, and providing a snap-fit ​​groove 621 in the locking block 620, the snap-fit ​​groove 621 engages with the snap-fit ​​member 630, and then by adjusting the position of the locking block 620 on the fixed slide 610 by the adjusting member 640, the snap-fit ​​groove 621 can engage or disengage with the snap-fit ​​member 630, thereby achieving the locking or unlocking of the position of the cell assembly mechanism 300 and / or the side plate fixing mechanism 500 on the base 100.

[0135] The adjusting member 640 can be a quick-release clip to facilitate the adjustment of the position of the locking block 620. Furthermore, a wedge-shaped fit structure can be used between the slot 621 and the engaging member 630 to ensure proper engagement.

[0136] In some embodiments, a linear slide rail and a plurality of sliders may be provided on the mounting surface 101 of the base 100, and the plurality of sliders are sequentially slidably connected to the linear slide rail along the first direction X. A plurality of cell assembly mechanisms 300 and a side plate fixing mechanism 500 are respectively connected to the sliders to achieve a sliding connection between the plurality of cell assembly mechanisms 300 and the side plate fixing mechanism 500 and the base 100.

[0137] Optionally, embodiments of this application also provide a battery pack assembly device, including the cell stacking device in any of the above embodiments.

[0138] In the embodiments of this application, multiple cells 710 can be stacked along the second direction Y to form a cell group 720 by the cell grouping mechanism 300 on the base 100. Then, with the reference positioning mechanism 200 as the reference, multiple rows of cell groups 720 are stacked sequentially along the first direction X. During the stacking process, the pressing mechanism 400 presses the cell group 720 in each cell grouping mechanism 300. In this way, multiple cells 710 can be stacked to form a battery pack by the cooperation of multiple cell grouping mechanisms 300 and pressing mechanism 400. By pressing each row of cell groups 720 separately during the stacking process, the connection between adjacent rows of cell groups 720 is ensured to be firm, thereby improving the overall structural strength of the battery pack.

[0139] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0140] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A cell stacking device, characterized in that, include: The base (100), the reference positioning mechanism (200), the assembly mechanism of at least three battery cells (300), and the clamping mechanism (400); The base (100) is provided with a mounting surface (101), the mounting surface (101) has an intersecting first direction (X) and a second direction (Y), and the reference positioning mechanism (200) is fixedly connected to the mounting surface (101). Along the first direction (X), at least three of the cell assembly mechanisms (300) are arranged sequentially on one side of the reference positioning mechanism (200), and the cell assembly mechanism (300) is movably connected to the base (100). The cell assembly mechanism (300) is used to stack multiple cells (710) along the second direction (Y) to form a cell assembly, and to drive the cell assembly to move toward the reference positioning mechanism (200). The pressing mechanism (400) is movably connected to the base (100) and is used to press the cell groups in each of the cell grouping mechanisms (300) sequentially along the first direction (X) so that at least three cell groups are stacked to form a battery pack; The clamping mechanism (400) includes: a clamping assembly (410), a transmission component (420), and a second driving component (430); the clamping assembly (410) includes: a clamping plate (411), a lifting mechanism (412), and a connecting structure (413). An active space is formed between the cell assembly mechanism (300) and the mounting surface (101). The transmission member (420) is located in the active space and is movably connected to the base (100). The connecting structure (413) is connected to the transmission member (420), and the pressing plate (411) is slidably connected to the connecting structure (413). The lifting mechanism (412) is located on the connecting structure (413) and connected to the pressing plate (411), and is used to drive the pressing plate (411) to move up and down relative to the connecting structure (413). The second driving member (430) is connected to the transmission member (420), and is used to drive the transmission member (420) to move, and through the transmission member (420) drive the pressing plate (411) to squeeze the cell assembly.

2. The cell stacking device according to claim 1, characterized in that, The cell assembly mechanism (300) includes: a substrate (310), a positioning plate (320), and an assembly component (330). The substrate (310) is movably connected to the base (100) along the first direction (X), the positioning plate (320) is fixedly connected to one end of the substrate (310), and the group assembly (330) is movably connected to the other end of the substrate (310). The group assembly (330) can move along the second direction (Y) to approach or move away from the positioning plate (320), and multiple cells (710) are stacked to form a cell group by cooperating with the positioning plate (320) through the group assembly (330).

3. The cell stacking device according to claim 2, characterized in that, The assembly (330) includes: a pressing member (331) and a first driving member (332); The pressing member (331) is slidably connected to the substrate (310) along the second direction (Y). The first driving member (332) is disposed on the substrate (310). The pressing member (331) is connected to the first driving member (332). The first driving member (332) is used to drive the pressing member (331) to move closer to or away from the positioning plate (320) along the second direction (Y).

4. The cell stacking device according to claim 3, characterized in that, The pressing component (331) includes: a drive plate (3311), a pressing plate (3312), and a first pressure-sensitive component (3313). The drive plate (3311) is movably connected to the base plate (310) along the second direction (Y), and the pressing plate (3312) is elastically connected to the side of the drive plate (3311) facing the positioning plate (320); the first pressure sensing element (3313) is disposed between the pressing plate (3312) and the drive plate (3311) for detecting the relative pressure between the pressing plate (3312) and the drive plate (3311); The first driving member (332) is connected to the driving plate (3311) and is used to drive the driving plate (3311) to move, and drive the pressing plate (3312) to move along the second direction (Y) through the driving plate (3311).

5. The cell stacking device according to claim 4, characterized in that, The cell assembly mechanism (300) further includes: a first guide rail (340), a first slider (350), and a second slider (360); The first guide rail (340) is disposed on the substrate (310) along the second direction (Y). The first slider (350) and the second slider (360) are both slidably connected to the first guide rail (340), and the second slider (360) is located on the side of the first slider (350) facing the positioning plate (320). The driving plate (3311) is connected to the first slider (350), and the pressing plate (3312) is connected to the second slider (360). And / or, the assembly (330) further includes: a first limiting block (370) and a second limiting block (380), the first limiting block (370) and the second limiting block (380) being mounted at intervals along the second direction (Y) on the substrate (310), the driving plate (3311) being disposed between the first limiting block (370) and the second limiting block (380), the first limiting block (370) and the second limiting block (380) being used to limit the movement position of the driving plate (3311).

6. The cell stacking device according to claim 3, characterized in that, The first driving component (332) includes: a first lead screw (3321), a first lead screw slider (3322), a handwheel (3323), and a locking component (3324); The first lead screw (3321) is rotatably connected to the substrate (310), the first lead screw slider (3322) is slidably connected to the first lead screw (3321) along the second direction (Y), and the pressing member (331) is fixedly connected to the first lead screw slider (3322); the handwheel (3323) is connected to the first lead screw (3321) and is used to drive the first lead screw (3321) to rotate relative to the substrate (310); the locking member (3324) is disposed between the substrate (310) and the first lead screw (3321) and is used to lock the first lead screw (3321).

7. The cell stacking device according to claim 1, characterized in that, The connecting structure (413) includes: a pressing plate (4131), a connecting plate (4132), and a second pressure-sensitive element (4133). The extrusion plate (4131) is connected to the transmission member (420), the connecting plate (4132) is elastically connected to the extrusion plate (4131), and the clamping plate (411) is slidably connected to the connecting plate (4132) along a third direction (Z), which is perpendicular to the first direction (X) and the second direction (Y); the second pressure sensing member (4133) is disposed between the extrusion plate (4131) and the connecting plate (4132) for detecting the pressure between the extrusion plate (4131) and the connecting plate (4132).

8. The cell stacking device according to claim 7, characterized in that, The connection structure (413) also includes at least two guide shafts (4134) and an elastic element (4135). The extrusion plate (4131) is provided with at least two guide holes. One end of the guide shaft (4134) is connected to the connecting plate (4132), and the other end of the guide shaft (4134) passes through the guide hole. The elastic element (4135) is provided between the connecting plate (4132) and the extrusion plate (4131) and is sleeved on the outside of the guide shaft (4134). And / or, the transmission element (420) includes a second lead screw (421) and a second lead screw slider (422). The second lead screw (421) is rotatably connected to the base (100), the second lead screw slider (422) is slidably connected to the second lead screw (421), the extrusion plate (4131) is fixedly connected to the second lead screw slider (422), and the connecting plate (4132) is slidably connected to the second lead screw slider (422); the second driving member (430) is connected to the second lead screw (421) and is used to drive the second lead screw (421) to rotate, and drive the second lead screw slider (422) to move along the first direction (X) through the second lead screw (421).

9. The cell stacking device according to claim 1, characterized in that, The cell stacking device also includes a side plate fixing mechanism (500). Along the first direction (X), the side plate fixing mechanism (500) is located on the side of the plurality of battery cell assembly mechanisms (300) away from the reference positioning mechanism (200) and is movably connected to the base (100); the side plate fixing mechanism (500) is used to support the battery cell side plate to fit with the battery cell assembly, and to press the battery cell side plate and the battery cell assembly together by the pressing mechanism (400).

10. The cell stacking device according to claim 9, characterized in that, The reference positioning mechanism (200) or the side plate fixing mechanism (500) includes: a support base (510), a fixing plate (520), and a vacuum adsorption component (530). The support base (510) in the reference positioning mechanism (200) is fixedly connected to the base (100), and the support base (510) in the side plate fixing mechanism (500) is movably connected to the base (100); the fixing plate (520) is connected to the support base (510), and the vacuum adsorption component (530) is disposed on the fixing plate (520). The vacuum adsorption component (530) is used to adsorb and fix the battery cell side plate.

11. The cell stacking device according to claim 10, characterized in that, The vacuum suction component (530) includes at least two vacuum suction cups (531) and a vacuum generator (532). At least two of the vacuum suction cups (531) are spaced apart on the fixing plate (520) along the second direction (Y). The vacuum generator (532) is connected to the vacuum suction cups (531) and is used to provide vacuum suction to the vacuum suction cups (531) so as to adsorb and fix the battery cell side plate through the vacuum suction cups (531). And / or, the fixing plate (520) is provided with at least two positioning pins (540), and the at least two positioning pins (540) are spaced apart on the fixing plate (520) along the second direction (Y) for positioning the battery cell side plate.

12. The cell stacking device according to claim 9, characterized in that, The cell stacking device further includes: a plurality of positioning and locking mechanisms (600); the plurality of positioning and locking mechanisms (600) are sequentially installed on the base (100) along the first direction (X); the positioning and locking mechanism (600) includes: a fixed slide (610), a locking block (620), a snap-fit ​​member (630) and an adjusting member (640). The fixed slide (610) is mounted on the base (100), and the locking block (620) is slidably connected to the fixed slide (610). The locking block (620) is provided with a slot (621); the snap-fit ​​member (630) is provided on the battery cell assembly mechanism (300) and / or the side plate fixing mechanism (500). The adjusting member (640) is movably connected to the fixed slide (610) and connected to the locking block (620) for pushing the locking block (620) relative to the fixed slide (610) so that the locking block (620) moves closer to or further away from the latching member (630), and when the locking block (620) moves closer to the latching member (630), the slot (621) engages with the latching member (630).

Images